Wall-plastering machine



y D- A. A. GUERINI 1,757,627

WALL PLAs TERING MACHINE Filed April 4, 1927 3 Sheets-Sheet 1 A ORNEYS.

May6, 1930. v A. AQGUERINI 7, 1

WALL PLAS-TERING MACHINE Filed April 4, 192' 7 3 Sheets-Sheet 2 ORNEYS.

May 6, 1930.

Filed April 4, 1927 3 Sheets-Sheet s I ATTO EYS v Patented May 6, 1930 Amm'mm i- GUERINI, F iiiiw YORK, 1m Y.

WALL-'iPLASTERIiIG iiiicni'im My ii ventien eene'is s ii dgifiichi-iie whie ma be emplo ed fdi plttstermgj'weils; eel-1fiiigi or for applying-t emeiitte flo is;

The j of he" in ention eii its the ph -ems is-etipabl e 6f medifitetieii for piestering ceilings 6i "forepp1yi1{g eeriieht to.

'Sp'e'ttkin general-1y the ap l e-aid will b ininclined 'reietfiorijtethe' face t'o' which the pl-ajstei is' th be applied:

The plaster is ttdit ted-tehe deposited;

the bbard which because 'Of-its incline 6 cooperates with the w d-11f siiitfti-ee-te-"feiiii a so hdpp'eiitb held the plastei'j; aiiii meet-11s i'spip titled for stirrii'ig or-agitating the pl-sister to cause it tob''fd Eiiifci applied tiiih stti face. Mean-s is elso iiibhid'ed in the appz'tia- I ceneurrently Withthe time f the-bfid tier the surface to be plastered. Thi-sitfeT-fii ment is not es ential for all plastering it iesiittb 'e iii the aiiip-liett but is particularly 40' embody s ine shift of binding fibre;

I Wish to e'itieuiiiiiyteli etteritieii'te theem loyment in the piesent apparatus of the plaster boai ciwith esseeittted-stirriiig meet-e.

the inertia of the plaster is-ovicom'e aiidit is moveci iiiore fe'ztdi-ly td'th stirftie td be plastered is more efiici iiti iippI-i'ed tosuch surface hen =ag ifittted 'c1i1i ii1'g 21511515652" I tidii. The employment "(if nie'trfs' fer triiis 1927; seem Ne; 180,680:

vers l'y reciprocating the plaster beard duriiig the-a plication ofthe plzistei is, as stated, j highly desirable in a plyin first emits to lath o r othejtbacking, but while this feature ishighly eificfient su'chi letters-immanent is 55. not essential in the ap li'ctttieii of finish-ed coats and the resent invention is fu Tthei'he't limited to an apparatus embedy'iiig siith mean's'. 1

In" the preferred form of-thepfiese t-ineeve ntiong fhe p12ifif board is-iiiotij ited in clined pesition upon a suitable iranie', end agitators which-Verege soeittted theiewi o erated b ace-111mm prim ifiOVi'"'W1 at the same tim serves te cease travel; oi-the bd'giid ever thestirface to befipiisteied It lateral meveihent of the board is ,t'tl's'bi desii ed mechanism for acebmplishin g thiisreeuit may heitlse driven from the prime mb'tet which, in ractice, may 'conveni-entry be eleti'ifi 7t motor. I h 'I -m' aware'thet'theiinventioiimaypm take o-f difiereiit-ipmetieal fertile; witheutde' a rte ing. from the inventive- COiYcep-t;

Featufes of the invention ether than these specified, willbe a parent ffdfi'f thiier'eiii= after detailed description anci eiei'm'st Wii'efi read cbin'j meti'on with the e c'coifipxfiyiiig dI'EIWfil'gS. The acceinp'enyin'g drawings: ii-lusti et we p'r'actida'i reinbechment "of the inventienyhut the eonstmc'tieiigtherein shown to he deretoedl a-s iliuetretive, 'tml-y, eixdsnot as defining the limits of the inveiitie'm Figure 1 is a side-e'levettieiieit e; meehiiie; Fig iite' 2 is. a section 0T1 the line? 2 2 "of Figilre3., r

fligiireais an elev'e'tieh iebikifig fidfr'i the back of the machine or f rili 'ih side theteef away froth? thetvell. i

Figure '4 is a leiigitutiiiiei seetiehtaken on the. line efFigu re 1.

'Figure5 is a perspective-"View shbfi iffg' the pa tehiiie' of this intention, certain parts he mg broken" eiwety in the inte'i esjt e feleaihess.

shaft 15. This shaft hastwo cranks 16 and 17, andalso carries a drum 18. Also fixed on the shaft are two gears 19 and 20, the former gear is conventional, while the latter gear is a mutilated gear. That is to say, the gear 20 is provided with teeth only for one-half of its periphery, the other half being smooth and without teeth. Mounted in the frame in parallel relation to the shaft 15 and spaced laterally therefrom a short distance is a counter shaft 230m which is mounted two gears 22 and 24, the former of which meshes with the gear 19, and the latter of which is positioned to the side of, but does not mesh with the gear 20. The gear 24 is mutilated in the same manner as the gear 20, but

it is set oppositely to the gear 20. These two mutilated gears 20 and 24 areadapted to cooperate with a rack 25 in such manner that 1 when the gear 20 is in mesh with the rack, the

is disengaged from the gears 20 and 24 by secured to the arms 33..

backing down. the screws 26 and 27.,

The portion 8 of the frame is rectangular in form and mounted thereon are antifriction wheels 30 which are positioned at each end of the frame. In addition to the wheels 30, there are other antifriction wheels 31 and 32 at the top and bottom members of this frame,

. to another in order to mount the catches in the desired adjustment to determine the thickness of the mortar which is to be applied to the wall. Supported on the upstanding for-' ward edge of each catch is a shoe 35 adapted to ride against the wall and guide the plaster board during its operations as hereinafter;

more fully explained. 1

Each of the shoes is pivoted at its lower endon a vpivot 36 and is provided near its rendered relatively rigid by means of bars 38,-

39, 40 and 41, which are transversely slotted or grooved, as shown'in Figure 4, to receiveribs at the upper edges of partitioning fins 42 which are thus supported on the bars 3841 anddivide the chamber between the catches into smaller chambers. These fins are readily detachable and are inserted only when the machine is to be operated to apply mortar by running the machine Vertically, although they may be used whenever it is desired to localize the plaster, forexample, in proximity to doors, windows, etc;

The plaster board embodies a rectangular frame 29-to which is secured the plastering board proper 43. Hooks 44 and 45 are secured to the top and bottom of the frame 29 and engage with the antifriction rollers 31 and 32'to properly support the frame 29 on,

the frame 8'. The lateral members, of the frame 29 are provided with rectangular openings 46 (see Figures 3 and 4).

The plastering board 43 rests on the antifriction wheels 30 withthe hooks 44 and 45 hooked over the antifriction wheels 31 and 32 and the arms 33 passing through the openings45. The length of theseopenings will be suficientto permit of the lateral movement of the plastering board when desired' The plasteringboard 43 isprovided at its.

opposite ends with upturned lips 47 which cooperate with the catches toform the opposite sides of the plastering board. The openings 45 are closed bythe plates 48 which areof-the apparatus extends a shaft 51, see Fig.

ures 1, 2 and 3, and on this shaft are pivotally mounted bell cranks 5255 and 53-54. The bell cranks '52 55 arecoupled together by a rod 56 and the bell cranks 53 and 54 are coupled together by a rod 57 The rods 56 and 57 are respectively secured by connecting rods 58 and 59 to the cranks 16- and 17 of the I shaft 15. To the other arms of the bell cranks 53 and-54 is secured a bar 60 on which are attached tampers 61, while the bar 62 is secured to the bell cranks 5255. Tampers 63 are carried by this latter arm.

The apparatus as thus far described is all mounted on and supported by the frame which embodies the members 1 to 11. .The apparatus may be operated by hand and is provided with handles 49 secured to the frame elements 7 for this purpose. An additional handle 81 is also provided for manipulating the apparatus atheights where the operator can notreach by grasping the handles 49. Provision is made, however, for the manipulation of the apparatus by power. To this end a lifting frame is provided. This lift-- ing frame is composed of two upright channelled members 64 and. 65 which are vertically adjustable to varytheir height. The

top parts of these uprights are unitedto the lower parts by worms 66 which turn in smooth holes in blocks 67 secured to the lower SQCfmeats? tions of the uprights and work in threaded holes in blocks 68 carried by the upper sections; The channels 64 and 65 are extended to overlap the joints between the two sections for the length equal to the length of the worms 66, so that the channels in these uprights are substantially Continuous irre- One end of the cable is wrapped around the.

drum 18 and the opposite end is secured by a rig or bale to a horizontal beam 74. This beam together with the beam 76 passes through sleeves secured to the vertical uprights 50 and the length of these beams may be increased or decreased by sliding thebeams longitudinally with respect toshort beam sections 7 8 associated with the opposite ends of the longer beams. The ends of each of the short beams are provided with antifriction rollers 79Qwhich extend into thechannels of the uprights and springs 80 serve to main tain the rollers 79, in a manner to'talge up lost motion. 7 I I The preferredforin of apparatus ofthis invention which has been setforth in the foregoing detailed description operates in the following manner. V r e The mortar used for plastering the walls is'composed of different ingredients and in the first coat, such as is generally applied to lath, itembbdies some kind of fibre. In this cas s will be found desirable to manipulate the plaster board in such i'nanne'r that it will partake of lateral reciprocation while" traversing the wall vertically. Assume,there'- fore, that the machine is started with the rack 25 in engagement with the mutilated gears 20* and 24. As'the' machine is started with 1 the apparatus in its lowermost position adjacent the floor of the room, mortar is de posited upon the plaster board and as the moi"- tar is introduced the machine should coinmence to operate. The motor 12 is energized by pressing the -switch button 82 and the worm 13 immediately coi'nmence's to rotate.

The worm serves to drive the sl'i'aft 15, which causes reciprocation of the tampers simultaneously causing the plaster board to recipro'cate through the gears 20 and 24 and the rack 25 and at the same time, the-apparatus is raised by the winding of the cable 73 upon the drum 18-. e V p v As. the apparatus moves upwardly along he wan, the tempers thoroughly agitate the the wall surface.

mortar upon the plastering board and in'thus overcoming its inertia or its tendency to stick to the board, assists gravity in feeding the mortar to the wall, where it is deposited in a layer of desired thickness depending upon the adjustmentof the catches and shoes as will be apparent. The lifting operation of the-board will be accompanied by a lateral vibratory or reciprocating movement which will efllciently distribute the mortar upon If the apparatus is to be manipulated manually and without employing a supporting frame, the cable 7 3 and said frame are removed from the assembly and the operator after startingthe machine grasps the handles 49 and slowly raises the apparatus until it has reached a height where further manipulation while holding the handles would be inconvenient. The operator then grasps the handle or board 81 andcontinues to raise the apparatus until it reaches.

the ceiling.

The operation as thus far described contemplates simultaneous raising movement and lateral reciprocation, but at times lateral reciprocation is not necessary and in such cases, the rack 25 may be lowered out of engagement with the gears 20 and 24 to thus disconnect the lateral shifting mechanism. The speed at which the apparatus operates will of course depend upon particular condition's, namely, the consistency of the mortar or plaster to be applied, the constituents entering into such mortar or plaster, and other features which will be apparent to those skilled in the art; Anyone familiar with plastering may, however, readily determine the speed of operation of the machine to obtain the best results. The motor 12 is preferably a variable speed motor inorder to permit of very flexible adjustment in speeds.

I'Wisli to call particular attention to the advantages obtainable by the use of the tampers as described. They not only assist gravity in feeding the plaster to the wall, but also effect a more or less positive feed of plaster to cause it to firmly impinge the wall surface. This agitation of the plaster or mortar is highly desirable and while tampers are shown for this particular purpose, other equivalent stirring devices maybe employed in lieu thereof. The utilization of an in clined board is a further important feature of this invention either as considered with or without the lateral reciprocation or vibration caused when using an inclined board, the mortar is very efliciently fed to and distributed over the wall surface without any tendency of the board to drag on the plaster andproduce a roughened surface.

l/Vhen the board is tilted or inclined as described, its operation .7 closely simulates a forth the invention in its preferred practical form, but inasmuch as the invention may be varied in details without departing from the spirit thereof, it is'to be understood as fully commensurate with the appended claims. 1

This application forms, in part, a continuing case of my allowed application, Serial No. 718,961, filed June 9, 1924;.

Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent is: I

1. In a plastering machine, the combination of a plastering board, an inclined frame on which the plastering board is mounted for edgewise movement, means for moving the frame and plastering board along the surface to be covered, means for moving the plastering boardrelative to theframe and transversely across the surface to be covered, together with means progressively feeding the plaster along the plastering board, towards the surface to be covered.

2. In a plastering machine, the combination of a movable frame, a plastering board supported by said frame for edgewise rectilinear movement, means for moving the plastering board on the frame along the surface to be covered, means for moving the plastering Board on the frame transversely of the surface to be covered, and means on the frame for feeding the plaster along the plastering board, toward the surface to be covered. 7

3. In a plastering machine, the combinaiion of a frame, an angularly disposed plastering board mounted for edgewise movement on the frame, means for moving both the frame and plastering board edgewise with respect to the frame and along the surface to be covered, means for moving the plastering board across the surface to be covered, and means for progressively feeding the plastering material towards the surface to be covered.

4. In a plastering machine having the characteristics of claim 1, the addition of means for altering the inclination of the plastering board when desired.

5. In a plastering machine having the characteristics of claim 1, theaddition of antifriction means for supporting the plastering board in its transverse movement.

6. In a plastering machine, the combination of a movable frame, a plastering board supported by said frame and adapted to receive and carry plastering material, means for moving the plastering board on the frame along the surface to be covered, means formoving the plastering board on the frame transversely of the surface to be covered, and means on the framefor stirring and tamping the plaster and to feed said plaster along the plastering board, towards the surface to be covered.

7. In a plastering machine, the combination of a frame, an angularly disposed plas tering board and adapted to receive and I means for stirring and tamping the plaster ing material to feed to be covered. t

8. In a plastering machine, the combinait towards the surface tion of a frame, worms carried by the said frame, means for giving motion to the worms, movable means carried by the worms, a plastering board carried by the movable member and adapted to receive and carry plastering material, together with means. for giving transverse movement to' the plastering board as it movesover the surface to be plastered, and means for stirring and tamping plaster upon the plastering board to feed the plaster toward the surface to be covered.

9. In a plastering machine, the combination of a suitable frame, an angularly disposed plastering board supported on the frame and on which board mortar is adapted to be deposited, means associated with the board for stirring the mortar thereon, and means for moving the plastering board along the surface to be covered.

10. In a plastering machine, the combination of a suitable frame, an angularly disposed plastering board carried by'the frame andon which board mortar is adapted to be deposited, and guiding means adapted to bear against the surface to which the mortar is to be applied to space the plastering board uniformly from the said surface-as the board is moved thereover. I i

11. In a plastering machine, the combination of a plastering board adapted to receive and carry plastering material, means for moving said board along the surface to be covered and relative to the frame, together with means for stirring themortar along the plastering board toward the surface to be covered. V I

1 2. In aplastering: machine, the combination of a plastering board adapted to receive and carry plastering material, means for moving the plastering board along and across the surface to be covered and relative to the frame,together with means forstirring the mortar along the plastering board toward the surface to be covered.

13. In a plastering machine, the combination of a frame, a plastering board adapted to receive and carry plastering material, means for moving the plastering board along and across the surface to be covered and relative to the frame, and means on the frame for stirring the mortar along the plastering board toward the surface to be covered.

14. In a plastering machine, the combination of a frame, an angularly disposed plastering board adapted to receive and carry plastering material, means for moving the plastering board along and across the surface to be covered and relative to the frame, and means for stirring material toward the surface to be covered.

15. In a plastering machine, the combination of a frame with means to support the frame in inclined position with respect to the wall to'be plastered, a plastering board, mounted for lateral edgewise movement on the frame, and rack and pinion connections between the frame and the plastering board, and means for operating the rack and pinion connections to reciprocate the plastering board laterally as the frame and plastering board are held in proximity to the wall to be plastered.

16. In a plastering machine, the combination of a suitable supporting frame, a plastering board mounted on the frame for edge- .wisereciprocation thereon, and means carried by the frame and plastering board for imparting edgewise reciprocation to the board with respect to the frame, and means for stirring and tamping plaster deposited upon the plaster board for the purpose of moving such plaster in a direction of one edge to the plastering board adapted to be supported in cooperative relation to the wall to be plastered.

17. In a plastering machine, a plastering board, means for supporting the plastering board in inclined position in spaced relation to the wall to be plastered, and tamping devices reciprocating along a surface of the board toward and away from the wall to be covered for moving the plaster down the inclined board to the wall.

18. In a plastering machine, a plastering on which board mortar is adapted to be de-.

posited, guides bearing against the surface to be plastered. to space the lower edge of the board from said surface, and means associated with the board for stirring andtamping the mortar down the inclined surface of the board toward the wall surface. 7

19. In a plastering machine, a suitable frame, means for supporting said frame and guiding same for up and down movement, a plastering board supported in inclined position on the frame for edgewise lateral reciprocation and adapted to receive and carry plastering material, guiding means mounted on the frame for guiding the frame in its up and down movement and for spacing the lower edge of the plastering board a predetermined distance from the surface to be plastered, means mounted on the frame for laterally reciprocating the plastering board, and tampers operable adjacent the surface of the board to move the girder thereon toward the lower edge of the board.

20. In a plastering machine, a suitable V frame, means for supportingsaid frame and guiding same for up and down movement, a plastering board supported in inclined position on the frame for edgewise lateral reciprocation and adapted to receive and carry plastering material, guiding means mounted on the frame for guidmg the frame in its up and down movement and for spacing the lower edge oft-he plasteringboard a predetermined distance from the surface to be plastered,'and means mounted on the frame for laterally reciprocating the plastering board, and tamping rods operating adj acent the face of the board in a direction substantially parallel to the face'of the board and toward and away from the lower edge of said board, and means on the frame for operatingthe tampers to force plaster deposited signed the 

